A 3d exact arithmetic orientation predicate.
Namespace:
ceometric.ComputationalGeometry
Assembly:
ceometric.ComputationalGeometry (in ceometric.ComputationalGeometry.dll) Version: 2.4.0.0 (2.4.0.0)
Syntax
Visual Basic (Declaration) |
---|
Public Shared Function Orient3d_exact ( _
pa As Point, _
pb As Point, _
pc As Point, _
point As Point _
) As Double |
Return Value
Given a point lies 'above' a plane if
pa,
pb and
pc appear
in counterclockwise order when viewed from above the plane and
a point lies 'below' a plane if
pa,
pb and
pc appear
in clockwise order when viewed from below the plane, this predicate is
- positive if point lies below the plane.
- zero if point lies on the plane.
- negative if point lies above the plane.
See Also